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/* This file is part of the KDE project
   Copyright (C) 2002 Matthias Hoelzer-Kluepfel <hoelzer@kde.org>
   Copyright (C) 2002 Bernd Gehrmann <bernd@tdevelop.org>
   Copyright (C) 2003 Roberto Raggi <roberto@tdevelop.org>
   Copyright (C) 2003 Hamish Rodda <rodda@kde.org>
   Copyright (C) 2003 Harald Fernengel <harry@tdevelop.org>
   Copyright (C) 2003 Jens Dagerbo <jens.dagerbo@swipnet.se>
   Copyright (C) 2004 Alexander Dymo <adymo@tdevelop.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/
#ifndef KDEV_PARTCONTROLLER_H
#define KDEV_PARTCONTROLLER_H

#include <kurl.h>
#include <kparts/partmanager.h>
#include <ktrader.h>

/**
@file kdevpartcontroller.h
KDevelop part controller interface.
*/

namespace KParts
{
    class ReadOnlyPart;
}

/**Document state enum.*/
enum DocumentState
{
    Clean,            /**<Document is not touched.*/
    Modified,         /**<Document is modified inside a shell.*/
    Dirty,            /**<Document is modified by an external process.*/
    DirtyAndModified  /**<Document is modified inside a shell and at the same time by an external process.*/
};

/**
Interface to control loaded parts and other documents.
Part controller works with embedded into the shell parts. Such parts are usually editors,
GUI designers, etc.
*/
class KDevPartController: public KParts::PartManager
{
    Q_OBJECT
  TQ_OBJECT

public:
    /**Constructor.
    @param parent The parent object.*/
    KDevPartController(TQWidget *parent);
    
    /**Call this before a call to @ref editDocument to set the encoding of the
    document to be opened.
    @param encoding The encoding to open as.*/
    virtual void setEncoding(const TQString &encoding) = 0;
    
    /**Opens a new or existing document.
    @param url The URL of the document to open.
    @param lineNum The line number to place the cursor at, if applicable.
    @param col The column number to place the cursor at, if applicable.*/
    virtual void editDocument(const KURL &url, int lineNum=-1, int col=-1) = 0;
    
    /**Opens a new or existing document by splitting the view with the current,
    if applicable. Offers split views of source code and header files for instance.
    @param url The URL of the document to open.
    @param lineNum The line number to place the cursor at, if applicable.
    @param col The column number to place the cursor at, if applicable.*/
    virtual void splitCurrentDocument(const KURL &url, int lineNum=-1, int col=-1) = 0;
    
    /**Scrolls the viewport of the already opened document to the specified line
    and column if applicable, but does not give focus to the document.
    @param url The URL of the already opened document.
    @param lineNum The line number to place the cursor at, if applicable.
    @param col The column number to place the cursor at, if applicable.*/
    virtual void scrollToLineColumn(const KURL &url, int lineNum=-1, int col=-1, bool storeHistory = false ) = 0;
    
    /**Shows a HTML document in the documentation viewer.
    @param url The URL of the document to view.
    @param newWin If true, the new window will be created instead of using current.*/
    virtual void showDocument(const KURL &url, bool newWin = false) = 0;
    
    /**Embeds a part into the main area of the mainwindow.
    @param part The part to embed.
    @param name The name of the part.
    @param shortDescription Currently not used.*/
    virtual void showPart(KParts::Part* part, const TQString& name, const TQString& shortDescription ) = 0;
    
    /**Finds the embedded part corresponding to a given URL.
    @param url The URL of the document.
    @return The corresponding part, 0 if not found.*/
    virtual KParts::ReadOnlyPart *partForURL(const KURL & url) = 0;
        
    /**Finds the embedded part corresponding to a given main widget
    @param widget The parts main widget.
    @return The corresponding part, 0 if not found.*/
    virtual KParts::Part *partForWidget(const TQWidget *widget) = 0;
    
    /**@return The list of open documents*/
    virtual KURL::List openURLs() = 0;
    
    /**Saves all open files.
     @return false if it was cancelled by the user, true otherwise */
    virtual bool saveAllFiles() = 0;
    
    /**Saves a list of files.
    @param list The list of URLs to save.
    @return false if it was cancelled by the user, true otherwise */
    virtual bool saveFiles(const KURL::List &list) = 0;
    
    /**Reloads all open files.*/
    virtual void revertAllFiles() = 0;
    
    /**Reloads a list of files.
    * @param list The list of URLs to reload.*/
    virtual void revertFiles(const KURL::List &list) = 0;
    
    /**Closes all open files.*/
    virtual bool closeAllFiles() = 0;
    
    /**Closes a list of files.
    @param list The list of URLs for the files to close.*/
    virtual bool closeFiles(const KURL::List &list) = 0;
    
    /**Closes this part (closes the window/tab for this part).
    @param part The part to close.
    @return true if the part was sucessfuly closed.*/
    virtual bool closePart(KParts::Part *part) = 0;  
    
    /**Activate this part.
    @param part The part to activate.*/
    virtual void activatePart( KParts::Part * part ) = 0;
    
    /**Checks the state of a document.
    @param url The URL to check. 
    @return The DocumentState enum corresponding to the document state.*/
    virtual DocumentState documentState( KURL const & url ) = 0;
    
signals:
    
    /**Emitted when a document has been saved.*/
    void savedFile(const KURL &);
    
    /**Emitted when a document has been loaded.*/
    void loadedFile(const KURL &);
    
    /**Emitted when a document has been closed.*/
    void closedFile(const KURL &);
    
    /**Emitted when a file has been modified outside of KDevelop.*/
    void fileDirty(const KURL &);
    
    /**This is typically emitted when an editorpart does "save as"
    which will change the part's URL.*/
    void partURLChanged(KParts::ReadOnlyPart *);
    
    /**This is emitted when the document changes, 
    either internally or on disc.*/
    void documentChangedState(const KURL &, DocumentState);

};

#endif